Electric railway-motor



2 Sheets-Sheet 1.

(No Model.)

D. PRIEST. ELECTRIC RAILWAY MOTOR.

No. 595,409. Patented Dec. 14', 1897;

wmn

INVENTIJQ.

\AATNESSEEM I 01 mm (No Model.) 2 Sheets-Sheet 2 E. D. PRIEST.

ELECTRIC RAILWAY MOTOR.

UNITED STATES PATENT. OFFICE.

EDWARD D. PRIEST, OF soHENEcT DY, NEW YORK, ASSIGNOR TO THE GENERAL ELEoTRIo COMPANY, OF NEW YORK.

ELECTRIC RAlLWAY-MOTO R.

SPECIFICATION forming part of Letters Patent No. 595,409, dated December 14, 1897. Application filed February 23, 1897. Serial No. 624,566. (No model.)

To all whom it may concern.-

Be it known that I, EDWARD D. PRIEST, a

citizen of the United States, residing at Schen ectady, in the county of Schenectady, State of New York, have invented certain new and useful Improvements in Electric Railway-Mo tors, (Case No. 506,) of which the following is a specification.

The present invention relates to electric railway-motors, and has for its object to improve their construction and to reduce the cost of maintenance.

In the accompanying drawings, attached to and made a part of this specification, Figure 1 is a side view of a motor. Fig. 2 'is a sectional view taken on the line 2 f Fig. 1,

I the field-magnet, are provided, in which the and Fig. 3 is a cross-section of an armaturebearing.

The motor A is a four-pole machine, and the field-magnet is divided into two substantially equal parts B and B. The top half is supported at the rear end by bearings on the axle O and at the front end by the bar D. The latter is preferably spring-supported on the car-truck. The lower half B of the magnet-frame is secured to the upper half by bolts E E. The armatureF is provided with bearings, which are mounted in boxes G on the lower half of the frame, and by removing the nuts from the bolts E E the armature and lower halfof the motor may be removed Without disturbing the suspension of the upper half. Instead of mounting the brasses for the armature-shaft F directlyupon the field-magnet in the usual manner boxes G, separable from and mounted in cut-away portions of brasses are mounted. These boxes are substantially square, and each is provided with outwardly-extending lugs G G through which extend bolts H for securing the box to the field magnet casting. Extending upwardly from the lower part of the box and formed integral therewith is a projection I, forming a support and guide for the lower brass I. A similar projection I extends downward from the top of the box and forms a support and guide for the upper brass 1 The brasses, which partially surround the shaft F, are adjusted in the supports I I by means of bolts J J, Workin g in screw-threads, as shown, and having rounded ends, which enter sockets in the brasses. To prevent the bolts J J from turning, the outer ends of the lugs which support them are slotted, and cotter-pins extend through the bolts and engage therewith.

The arrangement of the bolts and brasses is such that a limited angular movement of the brasses in a plane parallel to the armature-shaft is permitted, which is sufficient to compensate for inaccuracies in workmanship.

The lower armature-shaft brasses wear faster than the top ones, and at times one brass wears faster than the corresponding one. With the ordinary construction this necessitates the use of shims, and to properly shim a bearing the bearing-cap has to be removed and the armature lifted to enable the shim to be inserted in place, and often a number of trials are required before the bearing is adjusted to the proper position. By

my arrangement the armature-brasses can readily be adjusted without unhanging the lugs G G on the same line with the joint between the parts of the field-magnet they may be finished by the same tool and at the same time with the joint. The box G being comparatively small it is easy to handle and the work thereon is facilitated.

for oiling the armature-shaft, the box G is provided with two chambers K K, one on each side of the shaft and connected. by a passage K Covers P P are provided for the chambers to permit the insertion of waste and oil. The chambers are preferably filled with cotton-waste T, saturated with oil, and the waste by engaging with the sides of the armature-shaft keeps it well oiled. The rear end of the box is provided with a flange or lip L, closely encircling the oil-thrower M, which is mounted on the armature-shaft F. This is arranged to prevent the oil from work.-

Referring more particularly to the means ing to the outside of the box and into the armature-winding and interior of the motor. As a further precaution a second oil-thrower M is mounted on the shaft, and inclosing it is a small auxiliary chamber 0, connecting with the outside of the motor.

The construction of both arm attire-bearings is the same, the one on the right or gear end of the motor, Fig. 2, beinglonger than the commutator end bearing on account of the additional strain thereon.

The boxes G are shown as being supported from the lower half of the field, but they may be carried by the upper half, if desired.

Vhat I claim as new, and desire to secure by Letters Patent of the United States, is-

1. In a dynamo-electric machine, the combination of an armature, a shaft therefor, a field-magnet inclosin g the armature, boxes mounted in cut-away portions of the fieldmagnet and separable therefrom, armatureshaft brasses mounted in boxes, and means for securing the boxes to the magnet-frame.

2. In an electric motor, the combination of an armature, a shaft therefor, a field-magnet inclosing the armature, boxes separable from the field-magnet in which the armature-shaft is mounted in cut-away portions of the fieldmagnet and separable therefrom, armatureshaft brasses mounted in the boxes, and bolts for securing the boxes to the magnet.

3. In an electric motor, the combination of an armature, a shaft therefor, a field-magnet inclosing the armature, boxes separable from and mounted in cut-away portions of the field-magnet,armature-shaft brasses mounted in the boxes, adjusting-bolts mounted in lugs integral with the boxes and situated above and below the brasses, and rounded ends on the bolts fitting sockets in the brasses, as set forth.

4. In an electric railway-motor, the combination of a field-magnet centered 011 a caraxle, an armature mounted within the fieldmagnet, a shaft therefor, mounted in cutaway portions of the field-magnet, armatureshaft brasses mounted in the boxes, means for securing the boxes to the field-magnet, lugs within the boxes supporting and guiding the brasses, bolts for adjusting the brasses, and lugs on the box in which the bolts are mounted.

5. In a dynamo-electric machine, the combination of an armature, a shaft therefor, armature-shaft brasses, boxes separable from the field-magnet in which the brasses are mounted, chambers on both sides of the shaft adapted to be filled with oil and waste, and an auxiliary chamber or passage connecting with the exterior of the motor, for conveying oil away from the armature.

G. In an electric motor, the combination of a field-magnet, an armature, a shaft therefor, armature-shaft brasses, boxes separable from the field-magnet in which the brasses are mounted, chambers for oil and waste located on both sides of the shaft, an oil-thrower mounted on the armature-shaft, and an auxiliary chamber in close proximity to the oilthrower, for receiving the oil therefrom and conveying it to the outside of the motor.

7. In an electric motor, the combination of an armature, a shaft therefor, armature-shaft brasses, boxes separable from the field-magnet in which the brasses are mounted, the brasses being situated above and below the shaft and partially surrounding it, chambers on both sides of the shaft filled with oil and waste, the waste engaging with the sides of the shaft, an oil-thrower mounted on the armature-shaft for conveying oil from the shaft to the chambers, an auxiliary chamber connecting with the exterior of the motor, and a second oil-thrower arranged in proximity to the first for conveying oil to the auxiliary chamber.

8. As an article of manufacture, a bearingbox having projections formed integral therewith and located at the top and bottom of the box for supporting and guiding the bearingbrasses, lugs on the outside of the box forsupporting it, closed chambers on both sides of the'projections connected by a passage, and an auxiliary chamber connected with the outside of the box for carrying away oil.

9. In an electric motor, the combination of a field-magnet, an armature, a shaft therefor, brasses mounted above and below the shaft and partially encircling it, supports and guides for the brasses, means for adjusting the brasses, chambers on both sides of the shaft, and waste in the chambers engaging with the sides of the shaft.

In witness whereof I have hereunto set my hand this 19th day of February, 1897.

EDIVARD D. PRIEST.

\Vitnesses:

W. F. MACDONALD, B. B. IIULL. 

